2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/34675Using squeezed vacuum state formalism of quantum optics, an approximate solution to the semiclassical Einstein equation is obtained in Bianchi type-I universe. The phenomena of nonclassical particle creation is also examined in the anisotropic background cosmology.9 pages,LATEX, no figuresGeneral Relativity and Quantum Cosmologytext